How to Reinstall Windows Internet Explorer 7by Bennett Gavrish
Every new computer with Windows XP or Vista comes with the latest version of Microsoft's web browser, Internet Explorer 7, already installed. However, if you accidentally delete the application or the program becomes corrupt, you will need to reinstall Internet Explorer 7 from the Microsoft website.
Open an earlier version of Internet Explorer or a different web browser, like Mozilla Firefox, and go to the Internet Explorer download page. See the Resources section below for a link.
Select your current operating system, either Windows XP or Vista, from the drop-down menu at the bottom of the page and click on the "Go" button.
Choose an installation language and then click on the "Download" button.
Open the installation program after the download has completed.
Advance through the installer steps and then restart your computer after the installation process has finished. Internet Explorer 7 will now appear in the "All Programs" list in the "Start" menu.